Company Reinvent Recess Digital, LLC created these great apps:
Freaking Math Whizz!, 3rd Grade Reading Comprehension Practice, 2nd Grade Reading Comprehension Practice, 3rd Grade Reading Guarantee Prep: Comprehension Practice, 4th Grade Reading Comprehension, Cinderella Reading Comprehension and Make your Own Cinderella Story, Boys Only Reading Comprehension, 5th Grade Reading Comprehension Practice, and others..